Discovery of Galaxies in the z=1.5-2.5 ``Bright Ages''

Details Discovery of Galaxies in the z=1.5-2.5 ``Bright Ages'' Discovery of Galaxies in the z=1.5-2.5 ``Bright Ages''

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..666..241c&link_type=abstract

THE EMERGENCE OF COSMIC STRUCTURE: Thirteenth Astrophysics Conference. AIP Conference Proceedings, Volume 666, pp. 241-244 (200

Astronomy and Astrophysics

Astrophysics

Origin, Formation, Evolution, Age, And Star Formation, Origin And Formation Of The Universe

Scientific paper

We present preliminary results from a multi-year optical and infrared photometry and spectroscopy project, with the goal of examining galaxy evolution through the relatively unexplored z=1.5-2.5 ``Bright Ages''. This substantial percentage of cosmic time may well be when the peak of the universe's star formation occurred, but we know little about it. We have completed an extensive imaging program, including over 30 nights on the Lick 3m and several HST WFPC2 fields. We emphasize deep IR photometry in order to measure the second strongest spectral feature in galaxies-the Balmer break, at rest wavelength 4000 to 3650 Å. We are now following up all interesting candidates using the Keck LRIS instrument, including its new blue sensitive CCD. We present spectra from three star-forming galaxies with redshifts of z=2.1, 2.4, and 2.6, one AGN at z=2.4, and an ERO with redshift z=1.0.

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